sublimemediumRule

Attachment: PDF Object Hash associated with fake Canada Revenue Agency documents

Matching PDF Object Hash associated with chrome -> export to pdf of a shared document related to Canada's Revenue Agency.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1204.002 T1486 T1036 T1027

defense-evasion

Detection Query

type.inbound
and any(filter(attachments, .file_type == "pdf"),
        any(file.explode(.),
            .scan.pdf_obj_hash.object_hash == "cf509abbdc5aa6b1b759a216e3e570cf"
        )
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Attachment: PDF Object Hash associated with fake Canada Revenue Agency documents"
description: "Matching PDF Object Hash associated with chrome -> export to pdf of a shared document related to Canada's Revenue Agency."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(filter(attachments, .file_type == "pdf"),
          any(file.explode(.),
              .scan.pdf_obj_hash.object_hash == "cf509abbdc5aa6b1b759a216e3e570cf"
          )
  )
attack_types:
  - "Credential Phishing"
  - "Malware/Ransomware"
tactics_and_techniques:
  - "PDF"
  - "Evasion"
detection_methods:
  - "File analysis"
  - "Threat Intelligence"
id: "ff09be2b-d5d9-5023-8e4f-830e7b19650f"